Percolator-heater.



0. A. CULBY.

PERCOLATR HEATERx Mwucmmn FILED APR. 2. 19m

1,268,928. l'zitvn'mlJum ll, 11H8.

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(A Q j ATTORNEY UNITED STATES PATEN T OFFICE.

OBA. A. COLBY, 0F 'WILXIN'SBURQ- PENNSYLVANIA, ASSIGNOB T0 WESTINGHOUSE ELECTRIC .LND MANUFACTURING COMPANY, A. CORPORATION OF PENNSYL- PEBCOLATOB-HF'ATEB.

lpeoillcatlon M Letters latent.

Patented June 11, 1918.

Application llled April 2, 1918. Serial No. 758,316.

7b all ywhom it may concern:

Be it known that I, ORA A. Conni', a citizen of the United States, and a resident of Vif'ilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful improvement in Percoletor- Heaters, of which the following is a Specification.

My invention relates to electrically-heated liquid-containing vessels of the percolator type and it has special reference to heater members for use in percolator elements.

One object of myinventionis to provide a percolator heater member of inexpensive construction, embodying means for producing pressure on the heater proper and thereby im prove thc thermal contact with the adjacent parte' of goed heat-conducting matcrial.

Another object of my invention is to provide a strong, comlaet and Self-alining heater member of an improved form adapted for loealizing the heat,

Aceordin to my invention, I provide a heater mem ier having a plurality of parte which are mechanically associated in such u manner as to adapt them for exerting pressure on the heater. The several inrts, when assembled, form e substantie ly double frusto-conieal heater member, the larger diameter faces being adjacently disposed, and an electric heater element being located intermediate them. A central Well contains the body of liquid to be heated, and it .is evident that the construction of the heater member lends itself very favorabl to a loculization around the central wel of the greater portion of the emitted heat. The self-alinmg roperty of the heater member is obtained by the intox-engagement of the several component parts'and by menne of o. clamping rim integral with one ofthe parte and disposed to ft tightly around the other parts.

In the accompanying ml'rawirig,l`igure 1 is a sectional view of a percolator element embodying my invention,- Fi 3 and' 5jare simllar section views of mogilications thereof; and Figs. 2 and 4 are Similar sectional views showing the embodiment of a, plurality of electric heaters in connection with my invention. j i

Referring to Fig. 1 of the drawing, a. percolator element 1 comprises a heater member respecti rely, of

`mud upper member to act 2 of goed lient-vouductin material, a heatinsulated incasing memer 3 therefor, a fountain tube l extending into the heater member 2, and un inlet valve 5 associated with .said tube.

The ineaeing member 3, fountain-tube 1 and valve 5 are old and well known in the art and, consequently, need not be described. '1t is understood, however, that said parts, or suitable substitutee, are necessary to the completeneshl ofthe perwlator. The heater member i.' comprises upper and lower substantially frusta-conical members,` 6 and 7,

good heat-conducting muteriul, ,Ilm large-dmnleler fumes 8 und i) being mijner-,idly disponi-d; a heult-r element l0 disposed iulernwdiale mid nufmbers, und a washer 7 disposed interxmediule the healer eli-inept ll) and the lower member 7. 'lhe lowermember 7h1- provided with a centrallydisposed, upwardly-projeeting, und exteriorly-threzuled lmb ll having a central well l2 into which the fountain tube 4 fits, and if; also provided with un upwardly und inwu rd ly hooked rim 115. The upper member li lits around the threaded hub 1l :md within the rim 13,:uul has a plurality of oppositelydisposed noix-.lues in the cireumfercm-e. lliotli members und 7 have concentrically disposed hexagoneily-shaped projections l-l and 15, respectively, which are adapted for use umuts. The washer-7 is disposed around-the hub 411 and is provided with a lurulity of npivnrdly-exlemlingeare or lues l1 cut from .its circumference for several?)y engaging the notches (3 in the upper member (i, thereby cunning the heater 10 and the :is one mechanical purpose hereinafter described. lo'snid healer muy be brought in a waterproof tube 17, or in any unit, ,for a through It ismnderstood that any suitable Atype other suitable manner.

`cali. heatermavbe employed, as the specific e ctnr'etherccfis ent invefntio l Thc^method of assembling the heater notmaterial to my presyn'1oinber"hereinbeforo described is as fol- Iowsq L 4The heater element 10 is disposed on the 'washerf and the latter is assembled with the upper member 6 in such a manner that the `care '7*' rigidly en e the slots 6, as

hereinbefore described. l he combined meehnnical unit is then screwed down on the hub 11 of the lower member 7 to give any desired pressure on the heater element 10, the two nuts 14 and 15 bein employed to advantage in the process. c purpose o employing the washer 7" is to prevent rub bing between either member 6 or njember 7 and the heater element 10, which might be damaged by said rubbing. The rimv 13 is finally spun over to hold the edges in proper position.

In Fig. 2, the heater member 2 comprises upper and lower oppositely-disposed substantially {ruste-conical members 18 and 19, respectively, of good heat-conducting material and a plurality of heater elements 20 disposed intermediate them. The lower member 19 is provided with a centrally disposed, upwardlyprojecting and exteriorlythreaded hub 21 having a central well 12 into which the fountain tube 4 lits, and is also provided with a' downwardly-disposed, hexagonally-shaped projection 22. The uper member 18 fits around the hub 21 and lias a downwardly and inwardl hooked rim 23 for engagin the lower mem er 19. Disposed interme inte said upper and lower members are a plurality of the heater elements 20, and a disk 24 of good heat-conducting material is disposed between said heater elements. A nut 25 screws down on the hub 21 of the upper member 18 for holdine said heater elements under pressure.

lhe method of assembling the heater element just described is as follows: One heater element 20 is disposed around the hub 21 of the lower member` 19, then the disk 24 and a second heater element 20. The upper member 18 is next fitted over the hub and the nut 25 is4 screwed down to give any desired pressure on said heater elements, the hexagonal projection 22 being also employed to advantage in the process. The rim 23 is spun over to hold the edges in position.

In Fig. 3, the heater member 2 comprises upper and lower substantially {ruste-conical members 26 and 27, respectively, of good heat-conducting material and a heater element 28 disposed intermediate them. The upper member 26 is provided with a centrally disposed, upwardly-projecting hub 29 having a central well 12 into which the fountain tube 4 tits, and is also provided with a downwardly disposed'cylindrical projection 30 having an outwardly disposed circular ilange 31. The lower member 27 lits around said cylindrical projection and engages said flange, and is provided with an upwardly and inwardly hooked rim 32 for engaging the upper member 26. The heater element 28 is disposed around the projection 30 and intermediate said upper and lower members.

The method of assembling the heater element just described is as follows: The heater element 28 and lower member 27 are disposed around the projection 30 on the upper member 26 and temporarily clamped together to give any desired pressure on said heater element. The flange 31 is then turned over for maintaining said ressure, and the rim 32 is spun over to hol the edges in position.

In Fig. 4, thelieater member 2 comprises upper and lower substantially frusto-conical members 33 and 34, respectively, of good heat conducting material and a plurality of heater elements 35 disposed intermediate them. 4 The upper mem er 33 is provided with a centrallydisposed, upwardly-projecting hub 36 having a central well 12 into which the fountain tube 4 fits, and is also provided with a downwardly-disposcd cylindrical projection 36Il having an outwardly disposed circular flange 37. The lower member 34, of relatively small diameter, fits around the cylindrical projection 36 and engages the flange 37. A thin disk 38 of good heat-conducting material, is disposed adjacent to the lower member 34 and has an upwardly and inwardly hooked rim 39 for engagin the upper member 33. Disposed interlne iate said upper member and said disk are a plurality of heater elements 35, and a second disk 24 of goed heat-conducting material is disposed intermediate said heater elements.

The method of assembling the heater element just described is as follows: One of the heater elements 35, the disk 24, a second heater element 35, the thin disk 38 and the lower member 34 are disposed in that order on the cylindrical projection 36 and temporarily clamped together to give any desired pressure on the heater elements. The flange 37 is then turned over for maintaining said pressure and the rim 39 is spun over to hold the edges in position.

In Fig. 5, the heater member 2 comprises upper and lower substantially frusto-conical members 40 and 41, respectively, of good heat-conducting material and a heater element 42 disposed intermediate them. The lower member 41 is provided with a centrally disposed, upwardly-projecting hub 43 having a central well 12 into which the fountain tube 4 fits and is also provided with an outwardlyisposed flange 44 and an upwardly and inwardly hooked rim 45. The upper member 40 fits around said hub and engages said flange and said rim. The heater element 42 is disposed around the hub 43 and intermediate said upper and lower members. l y

The method of assembling the heater member just described is as follows: The heater element 42 and the upper member 40 are disposed on the hub 43 of the lower member 41 and tem' orarily clamped together to give any desire pressure on the heater element.

The flange 44 is then turned over for maintaining said pressure and the rim 45 is spun over to hold the ed in position.

Those skilled in t e art will understand that man y modifications may be made within the spirit and scope of my invention, and I desire Vthat only such limitations shall be imposed as are indicated in the appended claims.

I claim as my invention 1. In anelectrical heating apparatus, a ilanged member having a hollow central hub constituting a liquid-receiving well, a second flanged member having a central aperture therein of a size to receive and closely fit around a portion of said hub, and a heater element clamped between the flanges of the said members, one of said members having an integral portion en aging the other member to secure said mem ers together.

2. In an electrical heating apparatus, a flanged member having a central exteriorly screw-threaded hollow hub constituting a liquid-receiving well, a second flanged member having an. interiorly screw-threaded aperture to receive and closely fit the screwthreaded portion of said hub, and a heater element between the flanges of the said members. the screw threads on said members cooperating to clamp said element and members together.

3. In an electrical heating apparatus, a member defining a liquid-receiving Well and having an integral, outwardly-extending flange, a heating element supported on the said flange, an annular member surrounding the first-named member adjacent to the said well and having an outwardly-extending flange resting on the said heating element, and means for clamping the said heater element between the said flanges.

4. In an electrical heating apparatus, a

member defining a liquid-receiving well and having an integral, outwardly-extending flange, a heatin element supported on the 45 said flange am? an annular member surrounding the Erst-named member adjacent to the said well and having an outwardlyextending flange resting on the said heating element, the outer edge of one of the sai flanges being bent over the adjacent edges of the other flange and of the said heater element.

5. In an electrical heating apparatus, a member defining a liquid-receiving well and 55 having an integral, outwardlyextending flange, a heating element supported on the said ange and an annular member surrounding the first-named member adjacent to the said well and having an outwardly- 80 extending flange resting on the said heating element, the outer edge of the said lower flange being bent over the adjacent edge of the upper flange and of the said heating element.

6. In an electrical heating apparatus, a member defining a liquid-receiving well and having an integral, outwardly-extending flange, a heating element supported on the said flange, an annular member surroundi the first-named member adjacent to the Sali well and having an outwardly-extending flange resting on the said heating element, means for clamping the said heating element between the said flanges, and a casing surroundin both of the said members and spaced t erefrom.

In testimony whereof, I have hereunto subscribed my name this 25th day of March,

ORA A. COLBY.

Witnesses:

H. J. Mc B. B` Hume. 

